如何通过事务哈希获取公钥？

Question

例如，这是goerli: 0x60605c7e3fddd2be1fa63f4fa8ef12bfc5e5c69062c6a4788d1277e007e7de02.中的事务散列。

我们知道，公钥可以由ECDSA导出。我们可以从事务散列中得到v，r，S。因此，事务哈希=> vrs => ECDSA =>公钥。如何通过传输散列获取公钥？我想要一些密码。谢谢！

Answer 1

下面是一个使用Node.js版本5.4.x的ethers.js脚本：

const { ethers } = require("ethers");

// Function to extract the address associated with to a transaction
async function getPublicKeyFromTransactionHash(provider, txHash) {
  // Fetch the transaction using the transaction hash and provier
  const tx = await provider.getTransaction(txHash);

  // Extract the all the relevant fields from the transaction (We need all of them)
  const unsignedTx = {
    gasLimit: tx.gasLimit,
    value: tx.value,
    nonce: tx.nonce,
    data: tx.data,
    chainId: tx.chainId,
    to: tx.to,
    type: tx.type,
    maxFeePerGas: tx.maxFeePerGas,
    maxPriorityFeePerGas: tx.maxPriorityFeePerGas,
  };

  // Serializing tx without the signature
  const serializedTx = ethers.utils.serializeTransaction(unsignedTx);

  // Extract the signature (v, r, s) from the transaction
  const { v, r, s } = tx;
  
  // Join splitted signature
  const signature = ethers.utils.joinSignature({ v, r, s });

  // Recover the address or public key with (replace recoverAddress by recoverPublicKey) associated with the transaction
  return ethers.utils.recoverAddress(
    ethers.utils.keccak256(serializedTx),
    signature
  );
}

// Call the function with a provider and a transaction hash
(async () => {
  // Public provider for Goerli
  const provider = new ethers.providers.JsonRpcProvider(
    "https://ethereum-goerli-rpc.allthatnode.com"
  );

  // Transaction hash
  const txHash =
    "0x60605c7e3fddd2be1fa63f4fa8ef12bfc5e5c69062c6a4788d1277e007e7de02";

  // And finally call the function to extract the address associated with the transaction
  const address = await getPublicKeyFromTransactionHash(provider, txHash);

  console.log("Address:", address);
})();

Answer 2

要获取与事务哈希关联的公钥，需要使用块资源管理器。块资源管理器是一种搜索引擎，允许用户轻松地查找区块链上的信息。打开块资源管理器后，在搜索栏中输入事务哈希，并显示与事务关联的公钥。

Answer 3

如果您想在golang：https://github.com/ashish10677/public-key-extractor中找到解决这个问题的方法，您可以检查这个问题。